Out of all the senses, smell is most closely linked to memory.
146
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Your brain is 80% water.
525
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
The average temperature at 40,000 feet above sea level is -60 F.
56